The event is over and we gave Splinter a good run, but had constant drive problems, which we partly narrowed down to the TZ85s (partly low ground clearance.)

We initially found the volt drop was dipping so low that he ESCs were resetting (causing a pause) and turning off the Rx, which would then brown out flash and cause another pause.
Solved that by putting a separate bat on the Rx, getting a bigger Li-Po (still 3S).

We then found that the drive would cut out when you gave it the beans, potentially current limiting? Limited the Tx to 50% throws, again this helped.

The final problem though was that if you put the Tx stick into the corners (diagonals, mixing on the Tx) it would cut out, every time without fail.
We also found we weren't the only ones with this problem. Tried changing Rxs, still there.

Guilherme mentioned it may be a software limitation, although I didn't fully follow. Any ideas what could be going on?